Teresa Chance 
Central Policy - Freedom of Information 
1C/25 
100 Parliament Street 
 
 
London  SW1A 2BQ 
 
By email to: 
 
 
Lisa Evans 
Tel 
  
 
[[FOI #29412 email]] 
 
 
Fax 
020 7147 0666 
 
 
 
Email          
 
 
 
 
 
 
 
Date 
6 April 2010 
www.hmrc.gov.uk 
 
Our Ref 
FOI 1219/10 
 
Your Ref 
           
 
________ 
 
 
 
 
 
Dear Ms Evans, 
 
Freedom of Information Act 2000 
I am writing to confirm that HMRC has now completed its search for the information you 
requested on 20 February 2010.  I apologise for the delay in responding.  You asked:   
I would like to request the source code for the HMRC computable general equilibrium 
(CGE) model 
The information you requested is being withheld under the Freedom of Information Act 2000. 
The exemption that applies to this information is section 41 (1) of the Act, Information 
provided in confidence.  
You requested the source code for the HMRC Computable General Equilibrium (CGE) 
model.  This has been provided to HMRC by an external consultancy and its disclosure 
would constitute a breach of confidence actionable by that company.  The section 41 
exemption is an absolute one, which means that I am not required to consider the balance of 
the public interest in this matter. 
You may find it helpful to know that HMRC has published some outline information about the 
HMRC CGE model.  This can be found at the following link: 
http://www.hmrc.gov.uk/research/gillham-and-blake.pdf 
  
If you have any queries about this letter, please contact me. Please remember to quote the 
reference number above in any future communications. 
 
Information is available in large print, audio tape and Braille formats. 
Type Talk service prefix number – 18001 
 
 
 
 
 

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If you are not happy with this reply you may request a review by writing to HMRC FOI Team, 
Room 1C/25, 100 Parliament Street London SWIA 2BQ. You must request a review within 2 
months of the date of this letter. It would assist our review if you set out which aspects of the 
reply concern you and why you are dissatisfied.  
If you are not content with the outcome of an internal review, you may apply directly to the 
Information Commissioner for a decision. The Information Commissioner will not usually 
consider a case unless you have exhausted the internal review procedure provided by 
HMRC. He can be contacted at The Information Commissioner’s Office, Wycliffe House, 
Water Lane, Wilmslow, Cheshire SK9 5AF.  
 
Yours sincerely 
 
Teresa Chance 
 

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